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A fundamental property of matter which causes it to experience electromagnetic forces.

29 votes

How can a battery charge up another battery to a higher percentage?

Charge works similarly, except you cannot "see" charge like you can with water in a water tank. So what happens when you have a large tank with water at the same level as the smaller tank? … Likewise a sufficiently uncharged battery, even with plenty of capacity, can have low charge and not charge the phone. Hope that explains it. …
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